The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.test; |
| 18 | |
| 19 | import com.google.android.collect.Lists; |
| 20 | import junit.framework.Assert; |
| 21 | |
| 22 | import java.util.Arrays; |
| 23 | import java.util.HashMap; |
| 24 | import java.util.HashSet; |
| 25 | import java.util.Map; |
| 26 | import java.util.Set; |
Karl Rosaen | 97eb32e | 2009-06-29 18:06:40 -0700 | [diff] [blame] | 27 | import java.util.ArrayList; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 28 | import java.util.regex.MatchResult; |
| 29 | import java.util.regex.Matcher; |
| 30 | import java.util.regex.Pattern; |
| 31 | |
| 32 | /** |
| 33 | * Contains additional assertion methods not found in JUnit. |
| 34 | */ |
| 35 | public final class MoreAsserts { |
| 36 | |
| 37 | private MoreAsserts() { } |
| 38 | |
| 39 | /** |
| 40 | * Asserts that the class {@code expected} is assignable from the object |
| 41 | * {@code actual}. This verifies {@code expected} is a parent class or a |
| 42 | * interface that {@code actual} implements. |
| 43 | */ |
| 44 | public static void assertAssignableFrom(Class<?> expected, Object actual) { |
| 45 | assertAssignableFrom(expected, actual.getClass()); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Asserts that class {@code expected} is assignable from the class |
| 50 | * {@code actual}. This verifies {@code expected} is a parent class or a |
| 51 | * interface that {@code actual} implements. |
| 52 | */ |
| 53 | public static void assertAssignableFrom(Class<?> expected, Class<?> actual) { |
| 54 | Assert.assertTrue( |
| 55 | "Expected " + expected.getCanonicalName() + |
| 56 | " to be assignable from actual class " + actual.getCanonicalName(), |
| 57 | expected.isAssignableFrom(actual)); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Asserts that {@code actual} is not equal {@code unexpected}, according |
| 62 | * to both {@code ==} and {@link Object#equals}. |
| 63 | */ |
| 64 | public static void assertNotEqual( |
| 65 | String message, Object unexpected, Object actual) { |
| 66 | if (equal(unexpected, actual)) { |
| 67 | failEqual(message, unexpected); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Variant of {@link #assertNotEqual(String,Object,Object)} using a |
| 73 | * generic message. |
| 74 | */ |
| 75 | public static void assertNotEqual(Object unexpected, Object actual) { |
| 76 | assertNotEqual(null, unexpected, actual); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Asserts that array {@code actual} is the same size and every element equals |
| 81 | * those in array {@code expected}. On failure, message indicates specific |
| 82 | * element mismatch. |
| 83 | */ |
| 84 | public static void assertEquals( |
| 85 | String message, byte[] expected, byte[] actual) { |
| 86 | if (expected.length != actual.length) { |
| 87 | failWrongLength(message, expected.length, actual.length); |
| 88 | } |
| 89 | for (int i = 0; i < expected.length; i++) { |
| 90 | if (expected[i] != actual[i]) { |
| 91 | failWrongElement(message, i, expected[i], actual[i]); |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Asserts that array {@code actual} is the same size and every element equals |
| 98 | * those in array {@code expected}. On failure, message indicates specific |
| 99 | * element mismatch. |
| 100 | */ |
| 101 | public static void assertEquals(byte[] expected, byte[] actual) { |
| 102 | assertEquals(null, expected, actual); |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Asserts that array {@code actual} is the same size and every element equals |
| 107 | * those in array {@code expected}. On failure, message indicates first |
| 108 | * specific element mismatch. |
| 109 | */ |
| 110 | public static void assertEquals( |
| 111 | String message, int[] expected, int[] actual) { |
| 112 | if (expected.length != actual.length) { |
| 113 | failWrongLength(message, expected.length, actual.length); |
| 114 | } |
| 115 | for (int i = 0; i < expected.length; i++) { |
| 116 | if (expected[i] != actual[i]) { |
| 117 | failWrongElement(message, i, expected[i], actual[i]); |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Asserts that array {@code actual} is the same size and every element equals |
| 124 | * those in array {@code expected}. On failure, message indicates first |
| 125 | * specific element mismatch. |
| 126 | */ |
| 127 | public static void assertEquals(int[] expected, int[] actual) { |
| 128 | assertEquals(null, expected, actual); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Asserts that array {@code actual} is the same size and every element equals |
| 133 | * those in array {@code expected}. On failure, message indicates first |
| 134 | * specific element mismatch. |
| 135 | */ |
| 136 | public static void assertEquals( |
| 137 | String message, double[] expected, double[] actual) { |
| 138 | if (expected.length != actual.length) { |
| 139 | failWrongLength(message, expected.length, actual.length); |
| 140 | } |
| 141 | for (int i = 0; i < expected.length; i++) { |
| 142 | if (expected[i] != actual[i]) { |
| 143 | failWrongElement(message, i, expected[i], actual[i]); |
| 144 | } |
| 145 | } |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Asserts that array {@code actual} is the same size and every element equals |
| 150 | * those in array {@code expected}. On failure, message indicates first |
| 151 | * specific element mismatch. |
| 152 | */ |
| 153 | public static void assertEquals(double[] expected, double[] actual) { |
| 154 | assertEquals(null, expected, actual); |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Asserts that array {@code actual} is the same size and every element |
| 159 | * is the same as those in array {@code expected}. Note that this uses |
| 160 | * {@code equals()} instead of {@code ==} to compare the objects. |
Jeff Smith | a45746e | 2012-07-19 14:19:24 -0500 | [diff] [blame] | 161 | * {@code null} will be considered equal to {@code null} (unlike SQL). |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 162 | * On failure, message indicates first specific element mismatch. |
| 163 | */ |
| 164 | public static void assertEquals( |
| 165 | String message, Object[] expected, Object[] actual) { |
| 166 | if (expected.length != actual.length) { |
| 167 | failWrongLength(message, expected.length, actual.length); |
| 168 | } |
| 169 | for (int i = 0; i < expected.length; i++) { |
| 170 | Object exp = expected[i]; |
| 171 | Object act = actual[i]; |
| 172 | // The following borrowed from java.util.equals(Object[], Object[]). |
| 173 | if (!((exp==null) ? act==null : exp.equals(act))) { |
| 174 | failWrongElement(message, i, exp, act); |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | /** |
| 180 | * Asserts that array {@code actual} is the same size and every element |
| 181 | * is the same as those in array {@code expected}. Note that this uses |
| 182 | * {@code ==} instead of {@code equals()} to compare the objects. |
| 183 | * On failure, message indicates first specific element mismatch. |
| 184 | */ |
| 185 | public static void assertEquals(Object[] expected, Object[] actual) { |
| 186 | assertEquals(null, expected, actual); |
| 187 | } |
| 188 | |
| 189 | /** Asserts that two sets contain the same elements. */ |
| 190 | public static void assertEquals( |
| 191 | String message, Set<? extends Object> expected, Set<? extends Object> actual) { |
| 192 | Set<Object> onlyInExpected = new HashSet<Object>(expected); |
| 193 | onlyInExpected.removeAll(actual); |
| 194 | Set<Object> onlyInActual = new HashSet<Object>(actual); |
| 195 | onlyInActual.removeAll(expected); |
| 196 | if (onlyInExpected.size() != 0 || onlyInActual.size() != 0) { |
| 197 | Set<Object> intersection = new HashSet<Object>(expected); |
| 198 | intersection.retainAll(actual); |
| 199 | failWithMessage( |
| 200 | message, |
| 201 | "Sets do not match.\nOnly in expected: " + onlyInExpected |
| 202 | + "\nOnly in actual: " + onlyInActual |
| 203 | + "\nIntersection: " + intersection); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | /** Asserts that two sets contain the same elements. */ |
| 208 | public static void assertEquals(Set<? extends Object> expected, Set<? extends Object> actual) { |
| 209 | assertEquals(null, expected, actual); |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Asserts that {@code expectedRegex} exactly matches {@code actual} and |
| 214 | * fails with {@code message} if it does not. The MatchResult is returned |
| 215 | * in case the test needs access to any captured groups. Note that you can |
| 216 | * also use this for a literal string, by wrapping your expected string in |
| 217 | * {@link Pattern#quote}. |
| 218 | */ |
| 219 | public static MatchResult assertMatchesRegex( |
| 220 | String message, String expectedRegex, String actual) { |
| 221 | if (actual == null) { |
| 222 | failNotMatches(message, expectedRegex, actual); |
| 223 | } |
| 224 | Matcher matcher = getMatcher(expectedRegex, actual); |
| 225 | if (!matcher.matches()) { |
| 226 | failNotMatches(message, expectedRegex, actual); |
| 227 | } |
| 228 | return matcher; |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * Variant of {@link #assertMatchesRegex(String,String,String)} using a |
| 233 | * generic message. |
| 234 | */ |
| 235 | public static MatchResult assertMatchesRegex( |
| 236 | String expectedRegex, String actual) { |
| 237 | return assertMatchesRegex(null, expectedRegex, actual); |
| 238 | } |
| 239 | |
| 240 | /** |
| 241 | * Asserts that {@code expectedRegex} matches any substring of {@code actual} |
| 242 | * and fails with {@code message} if it does not. The Matcher is returned in |
| 243 | * case the test needs access to any captured groups. Note that you can also |
| 244 | * use this for a literal string, by wrapping your expected string in |
| 245 | * {@link Pattern#quote}. |
| 246 | */ |
| 247 | public static MatchResult assertContainsRegex( |
| 248 | String message, String expectedRegex, String actual) { |
| 249 | if (actual == null) { |
| 250 | failNotContains(message, expectedRegex, actual); |
| 251 | } |
| 252 | Matcher matcher = getMatcher(expectedRegex, actual); |
| 253 | if (!matcher.find()) { |
| 254 | failNotContains(message, expectedRegex, actual); |
| 255 | } |
| 256 | return matcher; |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Variant of {@link #assertContainsRegex(String,String,String)} using a |
| 261 | * generic message. |
| 262 | */ |
| 263 | public static MatchResult assertContainsRegex( |
| 264 | String expectedRegex, String actual) { |
| 265 | return assertContainsRegex(null, expectedRegex, actual); |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Asserts that {@code expectedRegex} does not exactly match {@code actual}, |
| 270 | * and fails with {@code message} if it does. Note that you can also use |
| 271 | * this for a literal string, by wrapping your expected string in |
| 272 | * {@link Pattern#quote}. |
| 273 | */ |
| 274 | public static void assertNotMatchesRegex( |
| 275 | String message, String expectedRegex, String actual) { |
| 276 | Matcher matcher = getMatcher(expectedRegex, actual); |
| 277 | if (matcher.matches()) { |
| 278 | failMatch(message, expectedRegex, actual); |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | /** |
| 283 | * Variant of {@link #assertNotMatchesRegex(String,String,String)} using a |
| 284 | * generic message. |
| 285 | */ |
| 286 | public static void assertNotMatchesRegex( |
| 287 | String expectedRegex, String actual) { |
| 288 | assertNotMatchesRegex(null, expectedRegex, actual); |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Asserts that {@code expectedRegex} does not match any substring of |
| 293 | * {@code actual}, and fails with {@code message} if it does. Note that you |
| 294 | * can also use this for a literal string, by wrapping your expected string |
| 295 | * in {@link Pattern#quote}. |
| 296 | */ |
| 297 | public static void assertNotContainsRegex( |
| 298 | String message, String expectedRegex, String actual) { |
| 299 | Matcher matcher = getMatcher(expectedRegex, actual); |
| 300 | if (matcher.find()) { |
| 301 | failContains(message, expectedRegex, actual); |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Variant of {@link #assertNotContainsRegex(String,String,String)} using a |
| 307 | * generic message. |
| 308 | */ |
| 309 | public static void assertNotContainsRegex( |
| 310 | String expectedRegex, String actual) { |
| 311 | assertNotContainsRegex(null, expectedRegex, actual); |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * Asserts that {@code actual} contains precisely the elements |
| 316 | * {@code expected}, and in the same order. |
| 317 | */ |
| 318 | public static void assertContentsInOrder( |
| 319 | String message, Iterable<?> actual, Object... expected) { |
Karl Rosaen | 97eb32e | 2009-06-29 18:06:40 -0700 | [diff] [blame] | 320 | ArrayList actualList = new ArrayList(); |
| 321 | for (Object o : actual) { |
| 322 | actualList.add(o); |
| 323 | } |
| 324 | Assert.assertEquals(message, Arrays.asList(expected), actualList); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | /** |
| 328 | * Variant of assertContentsInOrder(String, Iterable<?>, Object...) |
| 329 | * using a generic message. |
| 330 | */ |
| 331 | public static void assertContentsInOrder( |
| 332 | Iterable<?> actual, Object... expected) { |
| 333 | assertContentsInOrder((String) null, actual, expected); |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Asserts that {@code actual} contains precisely the elements |
| 338 | * {@code expected}, but in any order. |
| 339 | */ |
| 340 | public static void assertContentsInAnyOrder(String message, Iterable<?> actual, |
| 341 | Object... expected) { |
| 342 | HashMap<Object, Object> expectedMap = new HashMap<Object, Object>(expected.length); |
| 343 | for (Object expectedObj : expected) { |
| 344 | expectedMap.put(expectedObj, expectedObj); |
| 345 | } |
| 346 | |
| 347 | for (Object actualObj : actual) { |
| 348 | if (expectedMap.remove(actualObj) == null) { |
| 349 | failWithMessage(message, "Extra object in actual: (" + actualObj.toString() + ")"); |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | if (expectedMap.size() > 0) { |
| 354 | failWithMessage(message, "Extra objects in expected."); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * Variant of assertContentsInAnyOrder(String, Iterable<?>, Object...) |
| 360 | * using a generic message. |
| 361 | */ |
| 362 | public static void assertContentsInAnyOrder(Iterable<?> actual, Object... expected) { |
| 363 | assertContentsInAnyOrder((String)null, actual, expected); |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Asserts that {@code iterable} is empty. |
| 368 | */ |
| 369 | public static void assertEmpty(String message, Iterable<?> iterable) { |
| 370 | if (iterable.iterator().hasNext()) { |
| 371 | failNotEmpty(message, iterable.toString()); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | /** |
| 376 | * Variant of {@link #assertEmpty(String, Iterable)} using a |
| 377 | * generic message. |
| 378 | */ |
| 379 | public static void assertEmpty(Iterable<?> iterable) { |
| 380 | assertEmpty(null, iterable); |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * Asserts that {@code map} is empty. |
| 385 | */ |
| 386 | public static void assertEmpty(String message, Map<?,?> map) { |
| 387 | if (!map.isEmpty()) { |
| 388 | failNotEmpty(message, map.toString()); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | /** |
| 393 | * Variant of {@link #assertEmpty(String, Map)} using a generic |
| 394 | * message. |
| 395 | */ |
| 396 | public static void assertEmpty(Map<?,?> map) { |
| 397 | assertEmpty(null, map); |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * Asserts that {@code iterable} is not empty. |
| 402 | */ |
| 403 | public static void assertNotEmpty(String message, Iterable<?> iterable) { |
| 404 | if (!iterable.iterator().hasNext()) { |
| 405 | failEmpty(message); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | /** |
| 410 | * Variant of assertNotEmpty(String, Iterable<?>) |
| 411 | * using a generic message. |
| 412 | */ |
| 413 | public static void assertNotEmpty(Iterable<?> iterable) { |
| 414 | assertNotEmpty(null, iterable); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Asserts that {@code map} is not empty. |
| 419 | */ |
| 420 | public static void assertNotEmpty(String message, Map<?,?> map) { |
| 421 | if (map.isEmpty()) { |
| 422 | failEmpty(message); |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | /** |
| 427 | * Variant of {@link #assertNotEmpty(String, Map)} using a generic |
| 428 | * message. |
| 429 | */ |
| 430 | public static void assertNotEmpty(Map<?,?> map) { |
| 431 | assertNotEmpty(null, map); |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Utility for testing equals() and hashCode() results at once. |
| 436 | * Tests that lhs.equals(rhs) matches expectedResult, as well as |
| 437 | * rhs.equals(lhs). Also tests that hashCode() return values are |
| 438 | * equal if expectedResult is true. (hashCode() is not tested if |
| 439 | * expectedResult is false, as unequal objects can have equal hashCodes.) |
| 440 | * |
| 441 | * @param lhs An Object for which equals() and hashCode() are to be tested. |
| 442 | * @param rhs As lhs. |
| 443 | * @param expectedResult True if the objects should compare equal, |
| 444 | * false if not. |
| 445 | */ |
| 446 | public static void checkEqualsAndHashCodeMethods( |
| 447 | String message, Object lhs, Object rhs, boolean expectedResult) { |
| 448 | |
| 449 | if ((lhs == null) && (rhs == null)) { |
| 450 | Assert.assertTrue( |
| 451 | "Your check is dubious...why would you expect null != null?", |
| 452 | expectedResult); |
| 453 | return; |
| 454 | } |
| 455 | |
| 456 | if ((lhs == null) || (rhs == null)) { |
| 457 | Assert.assertFalse( |
| 458 | "Your check is dubious...why would you expect an object " |
| 459 | + "to be equal to null?", expectedResult); |
| 460 | } |
| 461 | |
| 462 | if (lhs != null) { |
| 463 | Assert.assertEquals(message, expectedResult, lhs.equals(rhs)); |
| 464 | } |
| 465 | if (rhs != null) { |
| 466 | Assert.assertEquals(message, expectedResult, rhs.equals(lhs)); |
| 467 | } |
| 468 | |
| 469 | if (expectedResult) { |
| 470 | String hashMessage = |
| 471 | "hashCode() values for equal objects should be the same"; |
| 472 | if (message != null) { |
| 473 | hashMessage += ": " + message; |
| 474 | } |
| 475 | Assert.assertTrue(hashMessage, lhs.hashCode() == rhs.hashCode()); |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * Variant of |
| 481 | * checkEqualsAndHashCodeMethods(String,Object,Object,boolean...)} |
| 482 | * using a generic message. |
| 483 | */ |
| 484 | public static void checkEqualsAndHashCodeMethods(Object lhs, Object rhs, |
| 485 | boolean expectedResult) { |
| 486 | checkEqualsAndHashCodeMethods((String) null, lhs, rhs, expectedResult); |
| 487 | } |
| 488 | |
| 489 | private static Matcher getMatcher(String expectedRegex, String actual) { |
| 490 | Pattern pattern = Pattern.compile(expectedRegex); |
| 491 | return pattern.matcher(actual); |
| 492 | } |
| 493 | |
| 494 | private static void failEqual(String message, Object unexpected) { |
| 495 | failWithMessage(message, "expected not to be:<" + unexpected + ">"); |
| 496 | } |
| 497 | |
| 498 | private static void failWrongLength( |
| 499 | String message, int expected, int actual) { |
| 500 | failWithMessage(message, "expected array length:<" + expected |
| 501 | + "> but was:<" + actual + '>'); |
| 502 | } |
| 503 | |
| 504 | private static void failWrongElement( |
| 505 | String message, int index, Object expected, Object actual) { |
| 506 | failWithMessage(message, "expected array element[" + index + "]:<" |
| 507 | + expected + "> but was:<" + actual + '>'); |
| 508 | } |
| 509 | |
| 510 | private static void failNotMatches( |
| 511 | String message, String expectedRegex, String actual) { |
| 512 | String actualDesc = (actual == null) ? "null" : ('<' + actual + '>'); |
| 513 | failWithMessage(message, "expected to match regex:<" + expectedRegex |
| 514 | + "> but was:" + actualDesc); |
| 515 | } |
| 516 | |
| 517 | private static void failNotContains( |
| 518 | String message, String expectedRegex, String actual) { |
| 519 | String actualDesc = (actual == null) ? "null" : ('<' + actual + '>'); |
| 520 | failWithMessage(message, "expected to contain regex:<" + expectedRegex |
| 521 | + "> but was:" + actualDesc); |
| 522 | } |
| 523 | |
| 524 | private static void failMatch( |
| 525 | String message, String expectedRegex, String actual) { |
| 526 | failWithMessage(message, "expected not to match regex:<" + expectedRegex |
| 527 | + "> but was:<" + actual + '>'); |
| 528 | } |
| 529 | |
| 530 | private static void failContains( |
| 531 | String message, String expectedRegex, String actual) { |
| 532 | failWithMessage(message, "expected not to contain regex:<" + expectedRegex |
| 533 | + "> but was:<" + actual + '>'); |
| 534 | } |
| 535 | |
| 536 | private static void failNotEmpty( |
| 537 | String message, String actual) { |
| 538 | failWithMessage(message, "expected to be empty, but contained: <" |
| 539 | + actual + ">"); |
| 540 | } |
| 541 | |
| 542 | private static void failEmpty(String message) { |
| 543 | failWithMessage(message, "expected not to be empty, but was"); |
| 544 | } |
| 545 | |
| 546 | private static void failWithMessage(String userMessage, String ourMessage) { |
| 547 | Assert.fail((userMessage == null) |
| 548 | ? ourMessage |
| 549 | : userMessage + ' ' + ourMessage); |
| 550 | } |
| 551 | |
| 552 | private static boolean equal(Object a, Object b) { |
| 553 | return a == b || (a != null && a.equals(b)); |
| 554 | } |
| 555 | |
| 556 | } |